Supply and Demand. Supply. As the price of a good or service that producers are willing and able to offer for sale during a certain period of time rises (or falls), the quantity of that good or service supplied rises (or falls). . Demand.
How do these videos show the relationship between supply and demand?
What is the relationship between producers and consumers?http://abcnews.go.com/Nightline/video/silly-bandz-latest-fad-11686769
Prices are used in the market to help producers and consumers communicate with each other.